rayh/kvo-block-binding — pull request #4 by oskarhagberg (2013-02-21 21:33:37+00:00)
Title: Refactor safe keypath coding

NSObject+WSObservation.h is awesome, but I always use it together with [libextobjc](https://github.com/jspahrsummers/libextobjc) metamacros to make sure that the KVO path is correct.

Here I've combined the two for convenience.